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Marina86 [1]
3 years ago
15

Let the random variable X denote the number of network blackouts in a day. The

Mathematics
1 answer:
faltersainse [42]3 years ago
6 0
E(X) = 0(0.7) + 1(0.2) + 2(0.1) = 0.2 + 0.2 = 0.4
The expected daily loss due to blackouts = 0.4 * $500 = $200

Var(X) = 0(0.7 - 0.4)^2 + 1(0.2 - 0.4)^2 + 2(0.1 - 0.4)^2 = 0.04 + 0.18 = 0.22
The expected daily variance due to blackouts = 0.22 * $500 = $110
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Answer:

180 sq. in.

Step-by-step explanation:

The formula for the volume of a circular cone is V = (πr^2h)/3

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3 years ago
Hi,so I've tried solving this problem for a while and I just don't get it,if you could give me some ideas I would appreciate it.
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Answer:

187 cm²

Step-by-step explanation:

The bottom rectangle area is easy, it is 15*9 = 135 cm².

To find the area of the triangle, you only need the base width and its height (you don't need the hypotenuse). You can then use the formula: area triangle is base times half height.

The base width is 15-7 = 8 cm

The height is 22-9 = 13 cm

So the area of the triangle is 13*8/2 = 52 cm²

Together with the 135 of the rectangle that sums to 52+135 = 187 cm².

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3 years ago
One number is 5 times a first number. A third number is 100 more than the first number. If the sum of the three numbers is 730,
Alenkasestr [34]

Answer:

the number 1.46

Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:-

As per the statement:

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Net proceeds is given as:

y-7-0.05xp = y-(0.05xp+7)

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